User Guide

Page 13UG10563-2.0 - Arcline 218 User Guide V2.0
7 Appendix
The loudspeaker system shall be of the bass reflex type using a single hyperboloid port
consisting of two high power 18” (457.2 mm) direct radiating low frequency (LF) transducer in a
birch plywood enclosure.
The low frequency transducers shall be constructed on a cast aluminium frame, with a treated
paper cone, long excursion 101.6 mm (4”) voice coil, wound with copper wires on a high
quality voice coil former and a neodymium magnet for high power handling and long-term
reliability.
Performance specifications for a typical production unit shall be as follows: the usable
bandwidth shall be 30 Hz to 200 Hz (±3 dB) and have a maximum on axis SPL of 134 dB
continuous (140 dB peak) measured at 1 m using IEC265-5 pink noise. Power handling shall
be 3000 W AES at a rated impedance of 2 x 8 Ω with pressure sensitivity of 100 dB measured
at 1W/1m. The wiring connection shall be via four Neutrik speakON™ NL4 (two front and two
rear of the enclosure) two for input and two for loop-out to another speaker, to allow for pre-
wiring of the connector before installation.
The enclosure shall be constructed from 18 mm multi-laminate birch plywood finished in a
textured polyurea and shall contain fixture points for a pressed, weather-resistant, powder-
coated steel grille with foam filter to protect the low frequency transducer. The cabinet shall
have four handles (two per side) for ecient manual handling. External dimensions of (H) 550
mm x (W) 1316 mm x (D) 695 mm (21.7” x 51.8” x 27.4”). Weight shall be 91 kg (200.6 lbs).
The loudspeaker system shall be a Void Acoustics Arcline 218.
Architectural Specifications